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The Earth's ____ causes the rising and setting of the Sun.
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equinox
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Rivers of ice called ____ slowly carved valleys and lakes.
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equinoxes
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Fossil fuels and nuclear power are ____ energy resources.
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full moon
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The Moon is between the Sun and the Earth during a ____.
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glaciers
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An ___ occurs when day and night are equal in length.
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new moon
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The spring and autumn ____ occur in March and September.
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nonrenewable
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The tilt of the Earth's axis causes the ____.
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rotation
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The Earth is between the Sun and the Moon during a ____.
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seasons
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